by L. M. Fraile, J. L. Herraiz, J. M. Udías, J. Cal-González, P. M. G. Corzo, S. España, E. Herranz, M. Pérez-Liva, E. Picado, E. Vicente, A. Muñoz-Martín and J. J. Vaquero
Abstract:
Positron range (PR) is one of the important factors that limit the spatial resolution of positron emission tomography (PET) preclinical images. Its blurring effect can be corrected to a large extent if the appropriate method is used during the image reconstruction. Nevertheless, this correction requires an accurate modelling of the PR for the particular radionuclide and materials in the sample under study. In this work we investigate PET imaging with 68Ga and 66Ga radioisotopes, which have a large PR and are being used in many preclinical and clinical PET studies. We produced a 68Ga and 66Ga phantom on a natural zinc target through (p,n) reactions using the 9-MeV proton beam delivered by the 5-MV CMAM tandetron accelerator. The phantom was imaged in an ARGUS small animal PET/CT scanner and reconstructed with a fully 3D iterative algorithm, with and without PR corrections. The reconstructed images at different time frames show significant improvement in spatial resolution when the appropriate PR is applied for each frame, by taking into account the relative amount of each isotope in the sample. With these results we validate our previously proposed PR correction method for isotopes with large PR. Additionally, we explore the feasibility of PET imaging with 68Ga and 66Ga radioisotopes in proton therapy.
Reference:
L. M. Fraile, J. L. Herraiz, J. M. Udías, J. Cal-González, P. M. G. Corzo, S. España, E. Herranz, M. Pérez-Liva, E. Picado, E. Vicente, A. Muñoz-Martín and J. J. Vaquero, “Experimental validation of gallium production and isotope-dependent positron range correction in PET”, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 814, no. Supplement C, pp. 110–116.
Bibtex Entry:
@article{fraile_experimental_2016,
	title = {Experimental validation of gallium production and isotope-dependent positron range correction in {PET}},
	volume = {814},
	issn = {0168-9002},
	url = {http://www.sciencedirect.com/science/article/pii/S0168900216000164},
	doi = {10.1016/j.nima.2016.01.013},
	abstract = {Positron range (PR) is one of the important factors that limit the spatial resolution of positron emission tomography (PET) preclinical images. Its blurring effect can be corrected to a large extent if the appropriate method is used during the image reconstruction. Nevertheless, this correction requires an accurate modelling of the PR for the particular radionuclide and materials in the sample under study. In this work we investigate PET imaging with 68Ga and 66Ga radioisotopes, which have a large PR and are being used in many preclinical and clinical PET studies. We produced a 68Ga and 66Ga phantom on a natural zinc target through (p,n) reactions using the 9-MeV proton beam delivered by the 5-MV CMAM tandetron accelerator. The phantom was imaged in an ARGUS small animal PET/CT scanner and reconstructed with a fully 3D iterative algorithm, with and without PR corrections. The reconstructed images at different time frames show significant improvement in spatial resolution when the appropriate PR is applied for each frame, by taking into account the relative amount of each isotope in the sample. With these results we validate our previously proposed PR correction method for isotopes with large PR. Additionally, we explore the feasibility of PET imaging with 68Ga and 66Ga radioisotopes in proton therapy.},
	number = {Supplement C},
	urldate = {2017-11-03},
	journal = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
	author = {Fraile, L. M. and Herraiz, J. L. and Udías, J. M. and Cal-González, J. and Corzo, P. M. G. and España, S. and Herranz, E. and Pérez-Liva, M. and Picado, E. and Vicente, E. and Muñoz-Martín, A. and Vaquero, J. J.},
	month = apr,
	year = {2016},
	keywords = {Ga, Positron emission tomography, Positron range, Radioisotope production},
	pages = {110--116},
	file = {ScienceDirect Full Text PDF:E:\cmam_papers\files\1475\Fraile et al. - 2016 - Experimental validation of gallium production and .pdf:application/pdf;ScienceDirect Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\9V8PGS4N\Fraile et al. - 2016 - Experimental validation of gallium production and .pdf:application/pdf;ScienceDirect Snapshot:E:\cmam_papers\files\1473\S0168900216000164.html:text/html;ScienceDirect Snapshot:E:\Usuarios\Administrator\Zotero\storage\FSJJINKJ\S0168900216000164.html:text/html},
}